Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-06-27
2011-12-27
Budd, Mark (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323160
Reexamination Certificate
active
08084920
ABSTRACT:
An anti-vibration unit has: an X-axis transducer generating elliptical vibration in drivers; a frame which is a fixing member having a holding portion for holding the X-axis transducer; an X frame having fixed thereto a slide element to which the drivers of the X-axis transducer are pressed and which moves in the X-axis direction with respect to the frame; a Y-axis transducer held by a holding portion provided in the X-frame and generating elliptical vibration in drivers; and a Y frame having fixed thereto a slide element to which the drivers of the Y-axis transducer are pressed and which moves in the Y-axis direction with respect to the X frame. The X-axis transducer and the Y-axis transducer have substantially same resonant frequency, and the slide elements differ in at least one of rigidity and density thereof, thereby providing a drive apparatus down-sized, large in driving force and high in efficiency.
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Budd Mark
Olympus Imaging Corp.
Volpe and Koenig P.C.
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